In this review Frostytech is testing out Glacialtech's new Igloo 5750 PWM heatsink - a versatile CPU cooler with twin Pulse Width Modulation controlled 92mm fans and a single power cord for the sake of convenience. The Igloo 5750 PWM heatsink and previously reviewed Igloo 5750 Silent are identical models, except for the fans used. If you read that review, feel free to jump ahead to the acoustic and thermal test results for the full low down. Glacialtech's Igloo 5750 PWM heatsink accomodates both socket 775 Intel and AMD K8 processors (socket 754/939/940/AM2/AM2+).